Senior Fullstack Engineer - Recruiting from Scratch : Job Details

Who is Recruiting from Scratch: Recruiting from Scratch is a talent firm that focuses on placing the best candidate for our clients. Our team is 100% remote and we work with teams across North America, South America, and Europe to help them hire. Senior Fullstack Engineer (Founding Team) Location: Brooklyn, NY (On-site, 5 days/week) Type: Full-time Compensation: $170,000 - $220,000 base + 0.1% - 0.9% equity Visa: H-1B transfers available (no new sponsorship) About the Role We're building the secure AI infrastructure layer for enterprise and government customers-and we're looking for a Senior Fullstack Engineer to join our founding team in Brooklyn. You'll help scale a product that's already driving 7-figure ARR with significant month-over-month growth, backed by a fresh $10M+ raise and clear market validation. As we move beyond MVP, this role is critical in designing and building a scalable, performant architecture while preserving our industry-leading security standards. You'll work across the stack, contribute to product direction, and help shape the technical foundation of the company. What You'll Do

• Own and evolve core product systems across frontend and backend
• Help transition from MVP to a robust, secure production-grade architecture
• Collaborate closely with product and leadership to define features, performance goals, and user experiences
• Mentor junior engineers and uphold a high bar for code quality and technical decision-making
• Work across our modern AI stack, supporting real-world use cases for enterprise and government clients

Role Responsibilities

• LLM & AI Platform Development: Improve our Retrieval-Augmented Generation (RAG) system by experimenting with foundational LLMs (OpenAI, Anthropic, Cohere, Gemini) and search techniques.
• Developer API Enhancements: Expand and refine our APIs for developer usability and enterprise integration-optimize performance, expand features, and simplify developer workflows.
• Frontend Product Engineering: Work on our React/Next.js frontend to deliver fast, intuitive, and visually consistent UI for our enterprise users.
• Data Platform Engineering: Scale and optimize our ingestion pipelines, embedding systems, and transformations to support generative AI across massive, customer-specific datasets.

Tech Stack

• Frontend: React, TypeScript, Next.js, Tailwind
• Backend: TypeScript, Next.js, Gel/PostgreSQL
• AI/ML: OpenAI, Anthropic, Cohere, Gemini, Milvus, QDrant, MongoDB
• Cloud & Infra: AWS, Terraform, Helm, Kubernetes
• Data Infrastructure: dbt, Airflow, Dagster, Snowflake (bonus)

Experience:

• 5-10 years of professional engineering experience, with recent roles in fullstack development
• Prior work at a fast-growing startup or highly regulated SaaS company
• Demonstrated impact-e.g. took a product from 0 → 1, or stayed through Seed → Series B
• Experience owning major projects end-to-end in high-growth, high-ownership environments
• Bonus: Early-stage or founding team experience

Education:

• Degree in Computer Science or related field, preferably from a top-tier university

Skills:

• Proficiency across React, TypeScript, Next.js, and PostgreSQL
• Experience working with AI/LLM platforms (e.g., OpenAI, Cohere, Anthropic)
• Familiarity with cloud-native infrastructure, Kubernetes, and IaC tools (Terraform, Helm)
• Ability to work in a security-conscious, highly regulated environment is a strong plus

Salary Range: $170,000-$220,000 base.